Floating chuck



C. G. GASHMAN.

FLOATING CHUCK.

APPLICATION FILED AUG-12. I919.

Patented Feb 15, 1921.

- bodying the maximum degree of variation. from the axis of rotation Within the mini-' m stares PATENT. 0mm.

eminence e. caesium, or wunns'aono, rnnnsvnvmu, xssmnon or dun-am T0 JOHN B. EADER, OF WAYNESBORO, PENNSYLVANIA rnoa'rme 'cnocx.

. Patented et. 15, 19 21.

Application med August 12,1919. Serial 116., 316,860.

To all whom it may concern:

Be it known that I, CLARENCE G. CASH- MAN \a citizen of the United States, residing Floating Chucks, of which the following is a specification.

This invention relates to floating chucks and has for an object to provide a chuck emmum longitudinal space.

Referring to the accompanying drawings which are made a part hereof and onwhich similar reference characters indicate similar parts, 7 I Y Figure 1 is a longitudinal sectional view through the improved chuck;

Fig. 2, a view of the improved chuck in end elevation as indicated by arrow 2 at Fig. 1 showing line 1--1 as the plane of Fig. 1;

Fig. 3, a view in side elevation'ofthe universal joint member; v I

' Fig. 4, a view of the universal joint mem: ber in end elevation;

Fig. 5, a view of the pivot pi'n insertedthrough the chuck member; and

Fig. 6 is avview of the pivot pin inserted through the housing member.

The improved chuck whichforms the subject matter of this a plication com rises a chuck member 10 having an axial too -receiving openin 11. Thechuck member 10 is inclosed within the housing 12 which is adapted to be associated with the power apparatus in the usual well known manner.

The housing member 12 has an enlarged oifset providing a shoulder 13 upon which is supported a-ball ring 14. The chuck member 10 is provided with a spherical'segment 15 complementary to a sphericaltapered ball ring 16, the spherical ta er of the latter being shown at 17. The all rings 14 and 16 are provided .with race-ways 18 and 19 which are struck upon a transverse curva-' ture considerably greater than the balls 20 mounted therein to permit a considerable degree of lateral movementiof the ball rings 16 relative to the ring 14 while the spherical-t: contacts 15 and 17 permit of an an lar' movement of the chuck member 10 re ative thereto; To permit of such angular movement and at the same time to provide for positive drive, the chuck member lq'is pro e. q r

' yided with a square socket 21 and the hous- 2 mg member with a square socket '22, the Y -walls of the two sockets being normally in almement. Withln the sockets 21 'and22 a,

universal joint member 23 is employed havng enlargements formedat its opposite ends 1n the form of bilges24 forming corresponding substantially wit ,the size of the sockets 21and 22 so that when seated therein they provide a' positive drivefrom and 26 are formed with spherical portions 27 and 28, respectively, properly propor tioned to fit the openings 29 and 30, respeca square t-ivel of the member 23, necks being pro- 7 i vide upon op osite sides of. the spherical enlargements 2 and 28 permittin movement of the member 23 in any and a l directions to a limited extent about the spherical portions 27 and '28 but preventing the displacement of the member from the housing and chuck respectively. The pins 25 and 26 are provided with extremities 31'and 32 m portione'd to fit into proper openings in the. I chuck member and housing, respectively, that in the chuck member being shown in the section of Fig. 1.

With the arts assembled in operative re- 1 lation as in icated at Fig. .1 the reamer, or

of course theother tool seated in the socket.

11, will be capable of operating with its -axis at a considerable variation from that of vided of course by the movement of the chuck member 10 upon its spherical contact surface, also the lateral movement of the ball rin 16 relative to the ring 14 and accomino ated by the universal joint, it being possible of course that the inner end of the.

tricity with the bore of the housing member and be positioned eccentric theretofor the purpose of changing the axis of rotation of the chuck member.

Having thus fully described my said vention, what I claim as new. and desire to shank. smaller than and mounted within; said .bore said chuck being'provided with socket within inner end and chuck member 10 shall depart fromconcenthe housing with a squared opening as a continuation of the bore, the walls, of said opening and socket normally registering, a-

joint 'member having bilges formed at its opposite endsfthe maximum dimensions of smaller than and mounted within said bore and provided with a squared opening, the

-walls of whichare in normalparallelism with the walls of' the squared opening of the housing, a connecting member having at its opposite ends bilges, the .maximumdimensions of whichform squares corresponding to and seated within the squared socket ends concentric with'the' curvature of the and opening of the chuck and housing, re'- spectively, said connecting member being provided with, openings concentric with .the curvature of the bilges, and pins inserted within saidopening s having spherical en-- lar ements corresponding to and seated wit in the openings of the connecting member and with their ends respectively connected with the housing and chuck member.

3. In a chuck parts movable relative to each other, and a connection comprising a connecting member having bilges formed adjacent its opposite ends, the center of curvature of said bilges being in the major axis of the connecting member and the maximum dimension of said bilges forming squares with openings formed through said bilges and pintles inserted in said openings provided with spherical enlargements at the middle thereof with reduced .neck

ortions upon opposite sides of said spherical enlargement, the said spherical enlargement being proportioned to and fitted within the openings of the connecting member and with the movable parts.

, 4:. In a: chuck a connectmg member all parts-of which are square in transverse section with bilges formed adjacent its oppobilges being in the majoraxis o necting member, and-with openin s formed j within 'said. ends concentric with t e curvasite ends, the center of curvature of said Leeann ture of the bilges and pintles having spherical enlargements positioned to engage within the openings positioned concentrically with the curvature of the bilges upon all reduced neck portions permitting angular movement of said connecting member relative to said pintles.

5. In' a chuck a connecting member having openings adjacent its op pintles inserted through sa1 openings provided with spherical enlargements fitting said openings, and with reduced portions on opposite sides of said spherical portions permitting-angular movement of each pintle and connecting member to depart from the osite ends and v normally perpendicular arrangement of the axes of the'connecting member and pintle. 6. In a chuck, a housing provided with, a

squared opening, a chuck member inserted;

in the housing and provided with a squared opening, a connecting member having bilges;

at its opposite ends, square in cross section's.

and with openings therethrough concentric with the curvature ofthe bilges, said bilged ends being respectively disposed within the I I squared opening of the housing and chuck member and pins inserted through the. housing' and chuck member respectively and through the bilges respectively housed by them. F

7. In a chuck, a housing having a squared opening, a chuck member disposed within the housing and having a normally alined squared opening, a connecting member--having its opposite ends bilged and square in cross sections, inserted within the squared openings of the housing and chuck member respectively, said connecting member also having. perforations through the bilges at ri ht angles each opening being concentric wlth the curvature of its bilge, and pins. inserted through the housing and chuck member and through the bilges respectively housed by them, saidpins being smaller within than the diamete of the perforations and provided with spherical enlargements concentric with the curvaturesof the bilge T In witness whereof, I have hereunto set my hand and seal at Waynesboro, Pennsl- Vania, this eighth day of August,- A. nineteen hundred and nineteen. I

CLARENCE G. CASHMAN. [n a]v Witnesses: V v, H-. E. CRAIG,

ALF. H. Rosanna. m

60 sides of the connecting, member and with 

